White cardboard is a kind of thick and thick thick paper. In the past, some people planned to use quantitative basis to divide: paper, cardboard and cardboard; in the early years in Shanghai shopping malls, the white thick paper with a basis weight of about 200g / m2 (the surface was smooth, calendered, and the stiffness was high. ), Call weighing paper. In fact, it is also a kind of paper jam. The most common paper jam is not colored, and is commonly referred to as white paper jam. If it is colored, it is called color jam according to color.
The main purpose of white card paper is to print business cards, certificates, invitations, covers, monthly calendars and postal postcards.
The white cardboard surname is "white", so it has high requirements for whiteness. The whiteness of A grade is not less than 92%, the grade of B grade is not less than 87%, and the grade of C grade is not less than 82%. When the whiteness exceeds 90%, it is a bit "shiny".
White cardboard also requires a high degree of stiffness, burst resistance and smoothness (except for white cardboard with embossed patterns), the paper surface is smooth, no paper marks, spots and other paper diseases, nor warpage The phenomenon of deformation occurs.
White cardboard is optimistic about the market in China. In the past, most of the white cardboard used in many foreign-related hotels and joint ventures in China was imported from abroad. Today, the rise of Ningbo Zhonghua Paper has changed the situation in which imported paper dominates China's white cardboard market. Ningbo Zhonghua Paper uses bleached chemical wood pulp, first-class processing equipment and advanced technology. Therefore, the quality of the finished product is extremely excellent, comparable to imported products, and the price is much lower than imported products.
The surface of the single copper paper is bright, uniformly coated, and absorbs ink quickly. It has good printability and is suitable for delicate color printing. For the purpose of exquisite printing, the surface of the base paper is coated with paint, and it is general coated paper that is calendered by a super calender.
Double-coated paper is divided into single-sided and double-sided coated coated paper. According to the Japanese paper classification standard, the coating amount on each side is about 10g / m2 or more. One of the paper types.
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